This volume has a classification system on the inside cover which explains the images to follow. The first category is structure and includes five subcategories, simple, girder (which includes deck and thru), suspension, draw, and arch (which includes single and multiple span). The second category is miscellaneous with two subcategories, famous and natural. Places include France, Germany, Switzerland, China, Russia, United States, Sweden, Peru, British Isles, Italy, Spain, and England.